Complicated excel equation with multiple conditions - excel

I have a sheet that I use to calculate my taxes, deductions, and 401k based on a timesheet. It also calculates my PTO, sick, and comp days (I don't get overtime, when I work overtime I get that time back at the end of the year as extra paid days off). My issue is that with the timesheet, it's tough to calculate my sick days, all other times are hour for hour or based on the pay period. But with sick days I get a specific amount every year.
Basically, I get 10 days (80 hours) per year. So I take that 80 hours, divide it by 26, and that gives me how much sick time I get per pay period. Problem is, since I get a biweekly pay, that's not actually correct. So for example, this month I have 2 paychecks, I'd get .92 days of sick time, but I should actually get 1. On the 2 months out of the year where I have 3 paychecks I would get 1.38 days of sick time, which of course isn't correct either.
So the issue is I'm trying to figure out how to write a formula to give me the the correct number of days. Refer to the screenshot:
So basiclaly on G6, the formula takes the rolled over sick days from the previous year (G39) and adds the current sick time to it. It decides that by checking if the gross pay for that pay period is there, then multiplies that amount by the sick time accrual rate (G40) and divides that by 8 to give me the days.
But what I want to do is to check how many months have been filled out and return that. So in this example May has been completed, so it would return 1 day. Since September has 3 pay periods, you will need to have all three September paychecks filled out for it to increment from 4 to 5 (may, jun, jul, aug makes 4).
Any ideas? Everything I've tried to do this it just fails. Keep in mind that those dates are dynamic, next year when I change the start date for the tax year, the months that have 3 months will change to match the actual pay periods for that year. So this formula will need to actually be able to count that any month has 3 pay periods to advance the sick day count, otherwise to do it if there are only 2 that have been filled.

Attempt #2 to answer! >8(
The end equation to do this all in one cell is going to get ugly,but it will work. In order to explain this and basically how I developed it, I am going to break it down into parts. At the end the parts will be back substituted into the big equation.
The first thing I did was determine what row was last filled, or as per the comments what is the last row of column P that has a value greater than 0. In order to determine this I used the aggregate function in a temporary cell of T15 (yes, in the middle of your spreadsheet but it wont matter in the end):
=AGGREGATE(14,6,(P5:P30>0)*(ROW(P5:P30)-ROW(P5)+1),1)
To break this function down:
14 tells it we want to do an array type calculation sorting the array from largest to smallest.
6 tells it to ignore errors
(P5:P30>0) tells it to build a true (or 1) and false (or 0) array of cells greater than 0
(ROW(P5:P30)-ROW(P5)+1) generates an array listing row numbers
1 tells it to return the largest value in the array, if it was 2 the second largest.
Now the important thing here is what happens when you multiply the greater than 0 array with the row number array. You wind up getting only the row numbers where there is a value in P greater than 0. And when we sort that and ask for the largest number we get the last row you have completed. Something to work with.
So now we can look up the last date completed, do some checks to see if its the end of the month or not and figure out how many sick days. The ugly formula starts out as:
=IF(MONTH(INDEX(I5:I30,T15))=MONTH(INDEX(I5:I30,T15)+14),MONTH(INDEX(I5:I30,T15))-1,MONTH(INDEX(I5:I30,T15)))
The logic test here is to find our if the last filled out date and the date 14 days in the future are still the same month. If they are the same month, you are not at the end of the month yet and there for have only earn up to the previous month's number in sick days. As such this part will tell us the previous month's number os sick days:
MONTH(INDEX(I5:I30,T15))-1
Now if the date 14 days in the future is not the same month then we know the last entry for the month has been completed and therefore we have accrued that month's number in sick days and use basically the same formula:
MONTH(INDEX(I5:I30,T15))-1
well I can see we have called on cell T15 4 times just to determine if we are subtracting 1 or 0. While the IF formula may feel more inline with your thought process, we can rearrange things and still get the same results but shortening the formula, reducing the calls to cell t15 by 1 and dropping the IF all together. This only works because we are dealing with 1 and 0 which is also true and false.
=MONTH(INDEX(I5:I30,T15))-(MONTH(INDEX(I5:I30,T15))=MONTH(INDEX(I5:I30,T15)+14))
Now lets bypass that T15 calculation and back substitute it in to the month formula above to get:
=MONTH(INDEX(I5:I30,AGGREGATE(14,6,(P5:P30>0)*(ROW(P5:P30)-ROW(P5)+1),1)))-(MONTH(INDEX(I5:I30,AGGREGATE(14,6,(P5:P30>0)*(ROW(P5:P30)-ROW(P5)+1),1)))=MONTH(INDEX(I5:I30,AGGREGATE(14,6,(P5:P30>0)*(ROW(P5:P30)-ROW(P5)+1),1))+14))
Not done yet. That only tells you the number of days you have accrued this year. Not what you really want to know. you need to convert it to hours. It also need to be reduced by the number of sick days used. The following need to be added to the big ugly above:
*8 for 8 sick hours to a sick day
-sum($L$5:$L$30) to account for sick time used
this results in:
=(MONTH(INDEX(I5:I30,AGGREGATE(14,6,(P5:P30>0)*(ROW(P5:P30)-ROW(P5)+1),1)))-(MONTH(INDEX(I5:I30,AGGREGATE(14,6,(P5:P30>0)*(ROW(P5:P30)-ROW(P5)+1),1)))=MONTH(INDEX(I5:I30,AGGREGATE(14,6,(P5:P30>0)*(ROW(P5:P30)-ROW(P5)+1),1))+14)))*8-sum($L$5:$L$30)
Now I did notice during testing that if no entries are in the spreadsheet, then the row of the last entry become 0 and this is simply not acceptable as it causes some strange results. So we will wrap this whole formula in a small error catcher to make sure 0 is the results when no payperiods have been completed.
=if(sum(P5:P30)=0,0,(MONTH(INDEX(I5:I30,AGGREGATE(14,6,(P5:P30>0)*(ROW(P5:P30)-ROW(P5)+1),1)))-(MONTH(INDEX(I5:I30,AGGREGATE(14,6,(P5:P30>0)*(ROW(P5:P30)-ROW(P5)+1),1)))=MONTH(INDEX(I5:I30,AGGREGATE(14,6,(P5:P30>0)*(ROW(P5:P30)-ROW(P5)+1),1))+14)))*8-sum($L$5:$L$30))
The icing on the cake is adding on the accrued sick days from the previous year. Since I am not sure how the sick rate and sick start work together I will leave that calculation up to you and simply let you know that whatever number gets carried over from the previous year, simply add it to the above formula after the very last ).
Here is my test bed showing proof of concept:
WARNING: This method ##WILL## produce false results for a pay period is =0 before the last date with a pay period >0 see example below:

Related

Excel - Formula to filter column based on variable time

I have a column that needs split based on "morning" and "evening" although the morning and evening times move every day (it's based on sidereal day). Calling them morning and evening is a little deceiving though because eventually the time will creep into the next day and I want to keep the groups distinct. It is more accurate to call them group 1 and group 2. It just so happens that they are around 12 hours apart so it looks like you can just separate based on time of day but once the later group creeps into the AM hours, it would start to get counted as "morning" and the earlier group would roll into the afternoon and be counted as "afternoon" See screenshot below for example data.
I need them split so I can perform operations on the value column so I can distinguish the values in the first group from the values in the second group. I thought of doing some sort of flip flop algorithm based on the previous cell but there may be a more elegant way to do it. Also, it's not shown on the example data but sometimes the day may skip but the times more or less continue in the same pattern of increasing by 3-5 minutes each day.
A date with a time stamp is stored as a number in Excel. Days are stored as whole numbers, time is stored in decimals. So, disregarding the date part, look at the decimal of the number and determine if that is before or after the time you want.
0.5 for example is midday, or 12 noon. So if the decimal part of A1 is less than 0.5, the time stamp would be in the morning.
=if(A1-int(A1)<0.5,"before noon","after noon")
It is not clear from your question how sidereal relates to the data in your sample.

Excel: Count Total Schedules at 30 Minute intervals taking day into account

In assessing how many agents can be added to certain times of day without exceeding the number of seats in the call center, I'm trying to discern how many agents are scheduled for each half hour interval on each day of the week.
Using the =SUMPRODUCT(((A$2:A$1000<=D2)+(B$2:B$1000>D2)+(A$2:A$1000>B$2:B$1000)=2)+0) formula I've been able to identify how many total agents work for each interval, however this doesn't take the day of week into account.
I currently have my spreadsheet setup this way:
K is the start time of the shift, L is the end time of the shift, M to S pulls data from another sheet that shows a 1 if the agent works on that day of the week and 0 if they do not, and then U has all the time intervals listed out. In the example, it's cut off but the columns continue down as needed. U goes to 49 and I've just been using a range from 2 to 500 for the others as we currently do not have that many shifts and I'm leaving space for the moment.
After some Googling, I tried =SUMPRODUCT(--(M2:M500="1"),(((K$2:K$1000<=U2)+(L$2:L$1000>U2)+(K$2:K$1000>L$2:L$1000)=2)+0)) but it only returns #VALUE! so I'm not sure what I'm doing wrong.
Any suggestions of how I can make this work? Please let me know if more information would be useful. Thanks.
=sumproduct(($K$2:$K$1000<=U2)*($L$2:$L$1000>=U2))
That will count the number of occurrences where the start time is less than or equal to the time in U2 AND the end time is greater than or equal to U2. It will check time from row 2 to row 1000. Any time one condition is checked and its true the comparison will result in value of TRUE and FALSE when its not true. The * act like an AND condition while at the same time converts TRUE and FALSE values to 1 and 0. So both conditions have to be true for a value of 1 to result. Sumproduct then totals up all the 1 and 0 to get you a count.
In order to consider the days of the week, you will need one thing to be true. Your headers in M1:S1 will need to be unique (which I believe they are). You will need to either repeat them in adjacent columns to M or in say V1 you have a cell that can change to the header of the day of the week you are interested in. I would assume the former so you can see each day at the same time.
In order to do this you want to add more conditions and pay attention to you reference locks $.
In V2 you could use the following formula and copy down and to the right as needed:
=sumproduct(($K$2:$K$1000<=$U2)*($L$2:$L$1000>=$U2)*(M$2:M$1000))
UPDATE #1
ISSUE 1 Time ranges ending the following day (after midnight)
It is based on the assumption that the ending time is later than the start time. When a shift starts at 22:00 and end at 6:30 as an example, our mind says that the 0630 is later than 22:00 because it is the following day. Excel however has no clue that 0630 is the following day and without extra information assumes it to be the same day. In excel date is stored as an integer and time is stored as a decimal. When you only supply the time during entry it uses 0 for the date.
In excel the date is the number of days since 1900/01/00. So one way to deal with your time out is to add a day to it. This way excel will know your out time is after your in time when the hour is actually earlier in the day.
See your sample data below.
Using your sample data, I did a straight copy of the value in L and placed it in M (=L3 and copy down). I then changed the cell display format from time to general. This allows you to see how excel sees the time. Note how all the time is less than 1.
In column N I added 1 to the value when the out time was less than the in time to indicate that it was the following day and we had not actually invented time travel. I also used the trick of a math operation will convert a TRUE/FALSE result to 1 or 0 to shorten the equation. I used =M3+(L3<K3) and copied down. You will notice in the green bands that the values are now greater than 1.
In the next column I just copied the values from N over using =N3 copied down, and then I applied just a time display format for the cell. Because it is only time format, the date is ignored and visually your time in column O looks the same as column L. The big difference is excel now knows that it is the following day.
you can quickly fix your out times by using the following formula in a blank column and then copying the results and pasting them back over the source column using paste special values.
=M2+(L2<K2)
The next part is for your time check. When looking at the 12:00 time you need to look at 1200 of the current day incase a shift started at 12:00 and you need to look at the 1200 period of the following day. In order to do that we need to modify the the original formula as follows:
=sumproduct(($K$2:$K$1000<=$U2)*($L$2:$L$1000>=$U2)*(M$2:M$1000)+($K$2:$K$1000<=$U2+1)*($L$2:$L$1000>=$U2+1)*(M$2:M$1000))
Note that the + in the middle of (M$2:M$1000) + ($K$2:$K$1000<=$U2+1)? This + acts like an OR function.
Issue 2 Time In/Out 15 minute increments, range 30 minute increments
You may be able to achieve this with the ROUNDDOWN Function or MROUND. I would combine this with the TIME function. Basically you want to have any quarter hour start time be treated as 15 minutes sooner.
=ROUNDDOWN(E3/TIME(0,30,0),0)*TIME(0,30,0)
Where E3 is your time to be converted
So your formula may wind up looking something like:
=sumproduct((ROUNDDOWN($K$2:$K$1000/TIME(0,30,0),0)*TIME(0,30,0)<=$U2)*($L$2:$L$1000>=$U2)*(M$2:M$1000)+((ROUNDDOWN($K$2:$K$1000/TIME(0,30,0),0)*TIME(0,30,0)<=$U2+1)*($L$2:$L$1000>=$U2+1)*(M$2:M$1000))
similar option could be used for the leaving time and rounding it up to the next 30 minute interval. In which case just use the ROUNDUP function. Though I am not sure it is required.

Excel Date difference without weekend days

Last time I posted a quite vague story about a date difference challenge which I haven't solved yet. I will try to elaborate since I have tried everything in my power and the problem still isn't fixed.
I currently have three columns.
Column 1 (F)
the date a car starts its repairs (format DayOfWeek-DD-MM-YYYY)
Column 2 (G)
the number of days in which the car is repaired (service level agreement [SLA]; the standard is 10 days)
Column 3 (H)
the output, which is the date the car should be finished. So the number of days after the startdate*
*Th thing which makes this case difficult is that only weekdays are included.
So, for example:
If a car starts repairs on Monday 1st of August, the finish date is Tuesday the 14th of August.
I tried to solve this with the following formula:
=IF(WEEKDAY(F218)=2;(F218+11);
IF(WEEKDAY(F218)=3;F218+12;
IF(WEEKDAY(F218)=4;F218+13;
IF(WEEKDAY(F218)=5;F218+14;
IF(WEEKDAY(F218)=6;F218+15)))))
In other words:
If startdate = Monday then startdate + 11,
if startdate = Tuesday then startdate + 12, etc.
This works, but I have 300+ rows and dragging this function down doesn't change the cell references.
I know about the NETWORKDAYS and WEEKDAY functions, but I encounter problems with any Monday where only 1 weekend passes and other days where 2 weekends pass.
First of all, I am assuming that your first day - whatever day that may be - is considered day one (1). So in my scenario, if a SLA states 2 days to complete a repair and the start date is a Monday, I'm assuming the repair should be completed by Tuesday.
My assumption is based off this comment by #RonRosenfeld:
...although you might have to subtract 1 from the number of days
With all that being said, try this formula in your cell instead:
 NOTE: You may need to change things like commas and semi-colons to adjust for your region.
=WORKDAY($F2,$G2-1)+LOOKUP(WEEKDAY(WORKDAY($F2,$G2-1),16),{1;2;3},{2;1;0})
What it does:
WORKDAY($F2,$G2-1)
First we want to find out exactly what day the repairs should be completed by if weekend days (Saturday and Sunday) were included. This part of the formula will simply give us a place to start.
$F2 is your repair start date
$G2 is the number of days a repair is supposed to take (you may need to add a column for this, because, as you stated, the SLA may change and you need the formula to be easily adjusted)
WEEKDAY(WORKDAY($F2,$G2-1),16)
The WORKDAY function from above is wrapped inside a WEEKDAY function. This WEEKDAY function is written to account for each day of a week to be assigned numbers. The [return_type] parameter of 16 tells Excel to label them as "Numbers 1 (Saturday) through 7 (Friday)". We chose 16 so that our LOOKUP function is easier to write. This part of the formula only returns a one-digit number, which in turn will be used to figure out what day of the week we actually want when excluding weekends.
LOOKUP(WEEKDAY(WORKDAY($F2,$G2-1),16),{1;2;3},{2;1;0})
We finish the formula by adding the result from a LOOKUP function using the first form of the function: LOOKUP(lookup_value,lookup_vector,[result_vector])
We found our lookup_value in the previous bullet point using the WEEKDAY function. Now we want Excel to use the lookup_vector - {1;2;3} in our formula - to find the correct value to add to the first part of our formula (which is found using the [result_vector] - {2;1;0} in our formula).
The lookup_vector only has three values: 1, 2, and 3.
1 signals Saturday
2 signals Sunday
3 signals all other days
Think of the lookup_vector and [result_vector] as forming a matrix/table from which our value is found:
1   2
2   1
3   0
If our number of repair days pushes us to:
a Saturday (1), the formula adds 2.
a Sunday (2), the formula adds 1.
any weekday, the formula adds 0 (since weekdays are acceptable).
Hopefully all of this makes sense. Best of luck to you!

Finding a shorter period of days within a longer period for calculation

I have a set of dates, in total 7 periods spanning 6 months each with corresponding calculation factor.
I will have user input of period for which they'd want the calculation to be done, which can fall within one of the 6 months periods or encompass between two or more such periods wholly or partially.
Illustration:
The preset periods:
User input:
I've obtained decimal value (monthly basis) of the periods input by the user for calculation. For first instance (see user input), the decimal value for the period 01-01-2015 to 29-04-2015 will be 3.97 on monthly basis. The calculation for that period would be like:
n*3.97*113%
For the second instance, the decimal value for the period 30-04-2015 to 30-06-2015 would be 2.03, which would be used to do calculation at 113% and then the result will be added to the calculation done at 119% using the decimal value 5.65 for the period 01-07-2015 to 20-12-2015:
(n*2.03*113%)+(n*5.65*119)
Think I can handle the breaking up of periods since the revision event is bi-annual on particular dates but advice regards to that is welcome. More importantly, I need help tracing the preset calculation factor (say 132%) corresponding to the period input by the user as illustrated above. Is it feasible?
I will use the standard approach for finding the overlap between two dates and will split the task into three parts as in my answer to this recent question.
(1) The first part is finding the overlap between the user's range of dates and one or more revision periods in whole months and will need an array formula. I have chosen to use the Datedif function 1 to get the difference in months between the beginning and end of the overlaps. If there is no overlap, the start date fed in to Datedif will be after the end date, and it will return an error which can be trapped by Iferror. If the user's dates start in A2 and B2, this gives in C2:
=SUM(IFERROR((DATEDIF(IF(K$2:K$8>A2,K$2:K$8,A2),IF(L$2:L$8<B2,L$2:L$8,B2),"m")+1)*M$2:M$8,0))
which has to be entered as an array formula using CtrlShiftEnter
The above result includes the first and last months entered by the user even if they are incomplete months. It's then necessary to subtract any missing days in the first and last months.
(2) Missing days in first month as a fraction of the number of days in that month in D2:
=SUMIFS($M$2:$M$8,$K$2:$K$8,"<="&A2,$L$2:$L$8,">="&A2)*(A2-EOMONTH(A2,-1)-1)/(EOMONTH(A2,0)-EOMONTH(A2,-1))
A noted by OP, this could also have been done using sumproduct, vlookup or index/match.
(3) Missing days in last month as a fraction of days in that month in E2:
=SUMIFS($M$2:$M$8,$K$2:$K$8,"<="&B2,$L$2:$L$8,">="&B2)*(EOMONTH(B2,0)-B2)/(EOMONTH(B2,0)-EOMONTH(B2,-1))
The total is just (1)-(2)-(3) or
=C2-D2-E2
I have put the results of OP's two examples for comparison in H2 and H3: my results agree with them in the first 3 significant figures.
n*3.97*113%
(n*2.03*113%)+(n*5.65*119)
In all cases I have set n=1 and ignored the fact that the rate is a percentage.
This shows how the results would be calculated manually:
1 Pros of using Datedif:
(1) Works across year boundaries unlike just using Month function.
(2) Works conveniently with Iferror to identify non-matching date ranges.
Cons of using Datedif:
(1) It is an undocumented function and may be withdrawn in future.
(2) In this particular case, all date calculations are within the same year so Month would be useable.

Turnaround Time excluding Weekends

Hi i need to get the turnaround time of this columns excluding the weekends. I tried to subtract it but without the excluding the weekends, so i am not successful to get the right turnaround time needed. Please help me to get the right formula for excluding the weekends of this sample. Thanks
As you can see here, this is the data that i need to get the TURNAROUND TIME, so what i did is column N subtract to column M.
This is the formula i used to see the results with correct format but i want to have a result which will have a exclusion of weekends but i don't know how to do it.
How about using the following formula, this will calculate the Work Days between two dates:
=NETWORKDAYS(N2,M2)
Since the comments in the old answer have grown - to the extent that the question needs editing to include all of the "additional" requirements (and there are various reason why these chameleon questions are often frowned upon. For any more "tweaks", raise a new question.) - I am posting the updated code here.
First: Since NETWORKDAYS counts from the Start of the first day to the End of the Last day, it tends to add an "extra" day. To fix this, we need to remember to subtract the first-part of the first day (midnight to start time) and the last part of the last day (end time to midnight) - but only if they are each Workdays.
=NETWORKDAYS(M2,N2)+IF(MOD(WEEKDAY(N2),7)>1,MOD(N2,1)-1,0)-IF(MOD(WEEKDAY(M2),7)>1,MOD(M2,1),0)
Next, was the requirement to exclude Holidays. IMPORTANT! This requires that you have a Worksheet called "Holiday Sheet", with a list of the Dates of your Holidays in Column A.
We use ISERROR(MATCH(..)) as a check for "Not in the list", and NETWORKDAYS accepts the list the third, optional, argument/parameter
=NETWORKDAYS(M2,N2,'Holiday Sheet'!$A:$A)+IF(AND(MOD(WEEKDAY(N2),7)>1,ISERROR(MATCH(N2,'Holiday Sheet'!$A:$A,0))),MOD(N2,1)-1,0)-IF(AND(MOD(WEEKDAY(M2),7)>1,ISERROR(MATCH(M2,'Holiday Sheet'!$A:$A,0))),MOD(M2,1),0)
The last "extra" requirement was to calculate this as Working Hours, with a workday running from 07:00 to 16:00 - a 9 hour day. To start, multiply NETWORKDAYS by 9 hours (TIME(9,0,0)), and then remember to remove the first-part of the first day (corrected for working hours) and the last part of the last day (also corrected for working hours).
We can use MEDIAN to get the middle number from 3 values, so that we never use a time before 07:00 or after 16:00
=TIME(9,0,0)*NETWORKDAYS(M2,N2,'Holiday Sheet'!$A:$A)+IF(AND(MOD(WEEKDAY(N2),7)>1,ISERROR(MATCH(N2,'Holiday Sheet'!$A:$A,0))),MEDIAN(TIME(7,0,0),MOD(N2,1),TIME(16,0,0))-TIME(16,0,0),0)-IF(AND(MOD(WEEKDAY(M2),7)>1,ISERROR(MATCH(N2,'Holiday Sheet'!$A:$A,0))),MEDIAN(TIME(7,0,0),MOD(M2,1),TIME(16,0,0))-TIME(7,0,0),0)

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